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Finding the Fourth Proportional to 3,461.76, 4,777.68 and 1,969.39

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Solution

The fourth proportional to 3,461.76, 4,777.68 and 1,969.39 is: 2,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.76 : 4,777.68 = 1,969.39 : x
  2. Step 2: Convert to fraction form
    3,461.76/4,777.68 = 1,969.39/x
  3. Step 3: Cross multiply
    3,461.76x = 4,777.68 × 1,969.39
  4. Step 4: Simplify right side
    3,461.76x = 9,409,091.33
  5. Step 5: Solve for x
    x = 9,409,091.33/3,461.76
  6. Step 6: Final answer
    x = 2,718.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.